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Proceedings Paper

Effects of cadmium combined with ultraviolet-B radiation on growth, gas exchange, and stable carbon isotope value (δ13C) in soybean (Glycine max L.)
Author(s): Tuo Chen; Weiya Qiang; Lizhe An; Xunling Wang
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Paper Abstract

The changes in growth, gas exchange, and stable carbon isotope value (δ13C) in soybean seedlings (Glycine max L. Merr. cv. Longdou No.1) exposed to a 11.2 kJ m-2 day-1 biologically effective UV-B radiation (UV-BBE, 280-315 nm) and 50 mg CdCl2 kg-1 vermicular treatment, either alone or in combination were investigated under greenhouse conditions. Compared to the control, plant height and biomass, photosynthesis rates (Pn), water-use efficiency (WUE), and stomatal conductance (Gs) decreased significantly (P<0.05) exposed to cadmium (Cd) or UV-B radiation and combination. Leaf stable carbon isotope composition (δ13C values) decreased by Cd or UV-B radiation alone and in combination, δ13C were significantly correlated with changes in Pn, WUE and biomass. But Cd and UV-B in combination did not cause greater changes compared to Cd or UV-B radiation alone in many parameters. These results suggested that there was relatively little interaction of the two stresses. δ13C values may provide a reliable indication for growth, WUE, Pn or biomass of soybean seedlings when exposed to UV-B radiation and cadmium pollution.

Paper Details

Date Published: 1 July 2003
PDF: 9 pages
Proc. SPIE 4896, Ultraviolet Ground- and Space-based Measurements, Models, and Effects II, (1 July 2003); doi: 10.1117/12.466165
Show Author Affiliations
Tuo Chen, CAREERI, CAS (China)
Weiya Qiang, Lanzhou Univ. (China)
Lizhe An, CAREERI, CAS (China)
Lanzhou Univ. (China)
Xunling Wang, Lanzhou Univ. (China)


Published in SPIE Proceedings Vol. 4896:
Ultraviolet Ground- and Space-based Measurements, Models, and Effects II
Wei Gao; Jay R. Herman; Guangyu Shi; Kazuo Shibasaki; James R. Slusser, Editor(s)

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